The 4Cs

Beautiful. Cherished. Desired. Unique. Each diamond is a miracle of time, place and geological circumstances. While the emotional value of diamond jewellery is immeasurable, its physical characteristics combine to establish its monetary value. Until the mid-twentieth century, there was no consistent standard by which diamonds could be graded. In the 1940’s The Gemological Institute of America, (GIA) created the first, now globally accepted, standard for describing diamonds by means of: Colour, Clarity, Cut and Carat Weight. The creation of the Diamond 4C’s allowed for two essential changes within the industry: Diamond quality could now be measured on a universal scale, and the history of each diamond was documented and made accessible. Today, the GIA is firmly established as the global authority on diamond evaluation and their GIA International Diamond Grading System™ is the universal method for assessing the quality of any diamond, anywhere in the world. Mindham Fine Jewellery prides itself on sourcing the finest of stones, including GIA certified diamonds. Please visit our showroom at 37 Hazelton Avenue to see our collection of fine jewellery, including pieces with GIA certified diamonds, or to discuss a custom creation.


Diamond weight is measured in “carats”. 1 carat weights 0.20 grams. A carat is broken into 100 points, so, for example, a 0.50 carat diamond is referred to as a half-carat diamond


As natural stones, all but the rarest of diamonds contain imperfections, referred to as “inclusions”. Depending on their size, number and location, these can obstruct the flow of light and decrease the clarity. Diamonds are examined under 10x magnification and graded ranging from FL (Flawless) to I-3 (Heavily Included)


Rough diamonds are cut into various shapes such as oval, round, and princess. The cutting quality affects the stone’s ability to reflect light, and impacts its value.


The colour grade of a diamond refers to the presence or lack of colouration in the stone. For white diamonds, the less colour there is, the greater the value. They are graded from D (colourless and most highly valued) to Z (light yellow and less highly valued). Coloured diamonds are also available, in colours such as pink, yellow and blue, often commanding significant prices for intense hues

Mindham Fine Jewellery Diamonds

Mindham Fine Jewellery maintains its reputation as a global leader in bridal jewellery by using the most exceptional diamonds the world has to offer. On average our stones range in colour from H – D, and SI1 (or better) in clarity. Additional options, colours and grades can be provided upon request.

Ethically Sourced Diamonds

Ensuring we work with reputable sources that are both ethically and environmentally responsible is of utmost importance and priority for us and our jewellers